# 延迟导入，避免循环依赖
def get_models():
    from .user import User
    from .lottery_result import LotteryResult
    from .ai_prediction import AIPrediction
    from .system_config import SystemConfig
    return User, LotteryResult, AIPrediction, SystemConfig

# 为了向后兼容
User, LotteryResult, AIPrediction, SystemConfig = get_models()

__all__ = ['User', 'LotteryResult', 'AIPrediction', 'SystemConfig'] 